Casing for mountable alarm unit



FIG. 1 is a perspective view of the casing secured to a mountable alarm unit.

FIG. 2 is a perspective view of the casing.

FIG. 3 is a first side elevation view of the casing.

FIG. 4 is a second side elevation view of the casing.

FIG. 5 is a third side elevation view of the casing.

FIG. 6 is a front elevation view of the casing; and,

FIG. 7 is a rear elevation view of the casing.

In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a casing for a mountable alarm unit, as shown and described. 